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1) Draw the structure of the hexapeptide (Ala-Pro-Met-Lys-Met-Gly) showing all bonds and atoms and please label each amino acid in the sequence.
2) Explain the relative mobilities (in detail) of of the amino acids Glycine (Rf = 0.29), valine (Rf=0.57), tryptophan (Rf=0.78), and lysine ( Rf= 0.12) with respect to how it appears on a TLC plate made of silica gel (stationary phase) and in a mobile phase of butanol (solvent).
Explain the polarity, solubility, and structural feature differences of these amino acids on the plate and how that affects its relative mobility and Rf value on the plate.
Compute the volume (in mL) of a 0.690 M KOH solution that must be added to 4.000 g of HEPES to give pH of 7.96
the cytoplasmic concentration is 0.4 micromolar, and the extracellular concentration is 1.5 micromolar, and the membrane potential is -60 mV?
Problem- Make a concentration cell using 5mL of 1.0M with 5mL of 0.1M copper (II) sulfate. Write balanced net ionic equations, include concentrations.
What is the iron molar concentration in the serum sample? Not that the following relationship may be used: Aunk/Aunk+std - Cunk/{Cunk+Cstd}
For the reaction Cu(s) + 2 Fe3+(aq) Cu2+(aq) + 2 Fe2+(aq), the equilibrium constant is Kc = 3.7×10^14 at 25 oC. Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concent..
When a sample of aqueous hydrochloric acid was neutralized with aqueous sodium hydroxide in a calorimeter, the temperature of 100.0 g of water surrounding the reaction increased from 25.0°C to 31.5°C.
The amp is a unit of electrical current equivalent
What is the partial pressure of ethane P ethane , in the flask? Express your answer to three significant figures and include the appropriate units
What is the chlorine flow rate at the reactor pressure and temperature. (b) If the etching rate of silicon is 0.50 ?/min, and the wafer is 300 mm in diameter, how many moles of silicon are etched per hour
How can you estimate the pH range of an indicator's color change. why do some indicators have two separate pH ranges.
A sample solution is to be analyzed for [Cu+2]. Three 5.0 mL aliquots are removed: to aliquot No.1 is added nothing; to No.2 is added 5?L of 100 ppm Cu+2, and to No.3 is added 10?L of 100 ppm Cu+2.
Suggest experimental modifications you could make if the acid to be tritrated has low solubility in water.
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